Change the following sentencees from the active into the pasive: They have to cut down this tree before the raining season. Someone had tured off all the lights before we left the room. They were continually interviewing Sally. An earthquake destroyed the town

Change the following sentencees from the active into the pasive
1. They have to cut down this tree before the raining season
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2. Someone had tured off all the lights before we left the room
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3. They were continually interviewing Sally
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4. An earthquake destroyed the town
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